import React, { Component } from 'react'
import PropTypes from 'prop-types'
import Item from '../Item'
import './index.css'




export default class List extends Component {

  //对接收的props进行:类型，必要性的限制
  static propTypes = {
    todos: PropTypes.array.isRequired,
    updateTodo: PropTypes.func.isRequired
  }

  render() {
    const {todos, updateTodo, deleteTodo} = this.props
    return (
     <ul className='todo-main'>
       {
        todos.map((todo => {
          return <Item key={todo.id} {...todo} updateTodo={updateTodo} deleteTodo={deleteTodo}></Item>
        }))
       }
     </ul>
    )
  }
}
